Mollies prefer a warm temperature--mine did best in temps in the low-to-mid-80s. Mollies also prefer brackish water (freshwater with a bit of salt), so be aware of this as well if you plan to house them with other fish. Most freshwater fish can take a little saltiness in the water.

The water temperature of mollies is 72 degrees,but not succeeded 82 degree Fahrenheit. This type of fish prefer hard water,and it pH level should be set at seven to eight. This fish will be reside in hard waters in which salt is needed. Mollies also enjoy well-planted area,house furnishing,lights,thin layer of humus and etc. ,which can decor your aquarium and keep mollies feel good.